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. 2017 Dec;95(12):5455–5465. doi: 10.2527/jas2017.1789

Table 3.

Effect of dietary soybean meal (SBM) levels and phytase on growth performance in nursery pigs (Exp. 1)1

Low SBM High SBM
Phytase, FTU2/kg Phytase, FTU/kg
Item 0 1,250 2,500 3,750 0 1,250 2,500 3,750 SEM
BW, kg
    0 d 5.4 5.5 5.5 5.6 5.5 5.5 5.6 5.5 0.2
    10 d3 7.1 7.2 7.2 7.4 6.9 7.1 7.1 7.1 0.1
    20 d4 11.2 11.4 11.5 11.5 11.0 11.3 11.3 11.1 0.1
    42 d 23.0 22.5 22.8 22.8 22.2 23.0 22.9 22.5 0.3
ADG, g
    Phase 15 (d 0–10) 147 167 165 160 159 179 174 189 7
    Phase 26 (d 11–20) 379 390 397 383 393 395 403 397 7
    Phase 3 (d 21–42) 507 531 525 516 534 499 525 514 9
    Overall 393 412 410 402 413 400 413 411 6
ADFI, g
    Phase 17 (d 0–10) 154 168 163 167 161 165 169 174 5
    Phase 28 (d 11–20) 479 496 497 503 468 473 472 475 8
    Phase 3 (d 21–42) 810 820 814 799 842 785 791 802 16
    Overall 577 589 585 580 593 565 566 577 10
G:F, g/kg
    Phase 19 (d 0–10) 953 995 1,013 960 986 1,085 1,031 1,085 35
    Phase 210 (d 11–20) 791 786 798 761 840 835 854 837 12
    Phase 311 (d 21–42) 625 646 644 645 633 635 663 640 8
    Overall12 680 699 700 692 696 707 728 711 6
Mortality, % 2.0 2.4 3.7 0.9 2.9 3.6 3.0 2.2 0.9
Full-value pigs,13 % 98.1 98.3 97.7 99.1 97.3 97.0 97.6 98.1 0.8
1

Values represent least squares means of 12 or 13 pens per treatment with 25 pigs per pen.

2

FTU = phytase units.

3

Main effects of SBM (P = 0.006) and phytase (P = 0.04).

4

Main effect of SBM (P = 0.004).

5

Main effect of SBM (P = 0.003) and linear effect of phytase (P = 0.007).

6

Main effect of SBM (P = 0.039).

7

Linear effect of phytase (P = 0.029).

8

Main effect of SBM (P < 0.001).

9

Main effect of SBM (P = 0.006).

10

Main effect of SBM (P < 0.001).

11

Quadratic effect of phytase (P = 0.026).

12

Main effect of SBM (P < 0.001) and quadratic effect of phytase (P = 0.001).

13

Pigs with BW ≥ 11.3 kg at the end of the nursery.